Teruhiko Ogawa, CEOThe company is committed to advancing efficiency and sustainability for energy and heat source systems. Its flagship simulation software suite, Enepro21, digitally replicates energy systems by importing actual operational data and helps clients design, analyze, verify and optimize their performance in detail. It provides a safe, evidence-based platform to test renewable and storage integration before making capital investments, leading to practical and measurable results.
Trusted by industry leaders including major district-energy operators, utilities, and engineering firms across Japan, along with design consultants, engineering firms and universities, Enepro21 is already driving large-scale CO₂ reduction across Japan.
Shunji Umeoka, CTOThe software is patented in Japan and the U.S., which ensures its originality and reliability. A user-friendly interface makes it accessible not only to design engineers but to plant operators.
Clients consistently value the accuracy and transparency of Enepro21 in simulating HVAC and district energy systems. It helps boost the efficiency of existing energy infrastructure as well as supports the integration of renewable and hydrogen energy systems.
Utilities and developers can implement peak shifting, DR/VPP participation and renewable maximization strategies. By modeling PV, batteries, hydrogen, and cogeneration in a digital environment, clients can make data-driven decisions regarding cost efficiency, evaluate feasibility, and assess environmental impact. They can also implement smart energy planning by predicting performance and estimating emission reductions.
In one instance, the operator of a large-scale commercial complex faced challenges in balancing energy efficiency with stable operation across multiple chillers, heat pumps and storage systems. The building consumed significant energy during peak summer periods, and the existing operation method often resulted in low part-load efficiency.
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We ensure that every enhancement to Enepro21 supports real-world emission reduction and energy efficiency.
Using Enepro21, EI Engineering implemented a process combining machine learning-based load forecasting and optimized operation planning. The system automatically imported operational data from the building’s BEMS and weather forecasts, generated accurate load predictions and created operation schedules. These schedules were displayed in the on-site control center, allowing operators to easily compare and adopt new operation strategies. As a result, summer operations achieved approximately 19 percent energy savings, contributing to lower CO₂ emissions.
Enepro21 has been used as a simulation tool in JICA-supported smart city energy studies, as well as NEDO-supported research on renewable energy integration in residential districts, contributing technical insights into the evaluation of advanced low-carbon energy systems.
Because Enepro21 has proven its value in real-world projects, the company emphasizes integrity and knowledge sharing. It ensures products contribute to the global transition toward a recycling-oriented society. Internally, the company’s culture prioritizes long-term sustainability over short-term profit, and its team is encouraged to innovate responsibly.
EI Engineering’s next milestones are centered on Enepro21 World Edition, the international version with enhanced support for BESS, hydrogen fuel cells and renewable integration. It plans to expand Enepro21 with functions such as machine learning-based load forecasting to strengthen its compatibility with smart grid and IoT platforms, to further enhance its role in next-generation energy management.
In parallel, it is expanding functions that combine numerical analysis and heuristic rules derived from operator experience to achieve optimal operation planning.
With EI Engineering, clients worldwide can plan and operate their energy systems more efficiently, unlocking a carbon-neutral, resilient future.
